Portable radio-controlled watch

Abstract

Provided is a portable radio-controlled watch including: an antenna electrode; a receiving circuit arranged on a circuit board; a pair of connection pins, each of which has one end contacting the antenna electrode, and which are arranged in parallel to each other; intermediate wiring, which is connected to another end of each of the pair of connection pins, and extends in a direction separating from a case body; and RF connection wiring, which connects the intermediate wiring and the receiving circuit to each other.

The invention claimed is: 
     
         1 : A portable radio-controlled watch, comprising:
 a piece of watch glass;   an antenna electrode;   a receiving circuit arranged on a circuit board;   an intermediate board, which is different from the circuit board, and on which intermediate wiring extending in a direction separating from a case body is arranged;   a connection pin, which has one end contacting the antenna electrode, and has another end connected to the intermediate wiring; and   RF connection wiring configured to connect the intermediate wiring and the receiving circuit to each other.   
     
     
         2 : The portable radio-controlled watch according to  claim 1 ,
 wherein the intermediate wiring includes a balun circuit, and   wherein the RF connection wiring includes a coaxial line or a coaxial pin.   
     
     
         3 : The portable radio-controlled watch according to  claim 2 , wherein the balun circuit is arranged on a surface of the intermediate board on an opposite side of the antenna electrode. 
     
     
         4 : The portable radio-controlled watch according to  claim 2 , wherein a metal member is prevented from being arranged between the balun circuit and the circuit board. 
     
     
         5 : The portable radio-controlled watch according to  claim 4 , further comprising a non-conductive spacer arranged between the balun circuit and the circuit board. 
     
     
         6 : The portable radio-controlled watch according to  claim 1 , wherein the case body has a cutout in a part of the case body opposed to the intermediate wiring. 
     
     
         7 : The portable radio-controlled watch according to  claim 1 , further comprising a bezel, into which the piece of watch glass is fitted, and which is connected to the case body,
 wherein the antenna electrode is arranged on a back surface of the piece of watch glass, and   wherein the bezel has a cutout in an inner peripheral surface of the bezel at a position through which the connection pin passes.   
     
     
         8 : The portable radio-controlled watch according to  claim 7 , further comprising an annular packing, which is arranged between the piece of watch glass and the bezel, and has a cutout at a position corresponding to the cutout of the bezel. 
     
     
         9 : The portable radio-controlled watch according to  claim 1 , further comprising a dial trim ring, which is arranged between the piece of watch glass and the intermediate board, and includes a fixing portion configured to fix the connection pin. 
     
     
         10 : The portable radio-controlled watch according to  claim 9 , further comprising a holding member configured to hold the connection pin and another connection pin in parallel to each other,
 wherein the dial trim ring includes a fixing portion configured to fix the holding member.